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Nonlinear Processes in Geophysics An interactive open-access journal of the European Geosciences Union
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Volume 14, issue 4
Nonlin. Processes Geophys., 14, 443–454, 2007
https://doi.org/10.5194/npg-14-443-2007
© Author(s) 2007. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.
Nonlin. Processes Geophys., 14, 443–454, 2007
https://doi.org/10.5194/npg-14-443-2007
© Author(s) 2007. This work is licensed under
the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License.

  02 Aug 2007

02 Aug 2007

Plankton blooms in vortices: the role of biological and hydrodynamic timescales

M. Sandulescu1, C. López2, E. Hernández-García2, and U. Feudel1 M. Sandulescu et al.
  • 1Institute for Chemistry and Biology of the Marine Environment, Carl-von-Ossietzky Universität Oldenburg, 26111 Oldenburg, Germany
  • 2Instituto de Física Interdisciplinar y Sistemas Complejos-IFISC (CSIC – Universitat de les Illes Balears), 07122 Palma de Mallorca, Spain

Abstract. We study the interplay of hydrodynamic mesoscale structures and the growth of plankton in the wake of an island, and its interaction with a coastal upwelling. Our focus is on a mechanism for the emergence of localized plankton blooms in vortices. Using a coupled system of a kinematic flow mimicking the mesoscale structures behind the island and a simple three component model for the marine ecosystem, we show that the long residence times of nutrients and plankton in the vicinity of the island and the confinement of plankton within vortices are key factors for the appearance of localized plankton blooms.

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